A portable dry chemical fire extinguisher...

Question 1 / 2066636eec28f7522a1c51c9e5

Question 1 of 2066636eec28f7522a1c51c9e5

A portable dry chemical fire extinguisher discharges by __________.

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Question 1 of 20

66636eec28f7522a1c51c9e5

A portable dry chemical fire extinguisher discharges by __________.

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🔍 Key Concepts

• How portable dry chemical extinguishers are pressurized and stored • Difference between stored-pressure vs. cartridge-operated extinguishers • What actually forces the powder out of the extinguisher cylinder

💭 Think About

• Think about what must happen inside the extinguisher to push the dry chemical powder up the hose and out the nozzle. • Which options describe a reliable, controllable source of pressure that can be built into a small, portable unit? • Eliminate any options that would not create enough or consistent pressure to throw powder toward a fire.

✅ Before You Answer

• Ask yourself: is dry chemical powder likely to flow by gravity alone, especially through a hose and nozzle? • Consider whether a hand pump is common on standard portable dry chemical extinguishers you see on board vessels and in buildings. • Think about whether mixing water with the chemical is how dry chemical units are designed, or if that sounds more like a different type of extinguisher.

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Question 1 of 20

A portable dry chemical fire extinguisher discharges by __________.

pressure from a small CO2 cartridge on the extinguisher

gravity when the extinguisher is turned upside down

air pressure from the hand pump attached to the extinguisher

pressure from the reaction when water is mixed with the chemical

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Question 1 / 2066636eec28f7522a1c51c9e5

Question 1 of 2066636eec28f7522a1c51c9e5

A portable dry chemical fire extinguisher discharges by __________.

Back

Question 1 of 20

66636eec28f7522a1c51c9e5

A portable dry chemical fire extinguisher discharges by __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed